21222010111331 has 16 divisors (see below), whose sum is σ = 22235158471680. Its totient is φ = 20216415648000.

The previous prime is 21222010111321. The next prime is 21222010111369. The reversal of 21222010111331 is 13311101022212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222010111331 is a prime.

It is a super-2 number, since 2×21222010111331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222010111321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59127110 + ... + 59484948.

It is an arithmetic number, because the mean of its divisors is an integer number (1389697404480).

Almost surely, 2^{21222010111331} is an apocalyptic number.

21222010111331 is a deficient number, since it is larger than the sum of its proper divisors (1013148360349).

21222010111331 is a wasteful number, since it uses less digits than its factorization.

21222010111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368386.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21222010111331 its reverse (13311101022212), we get a palindrome (34533111133543).

The spelling of 21222010111331 in words is "twenty-one trillion, two hundred twenty-two billion, ten million, one hundred eleven thousand, three hundred thirty-one".